Legal notice
This is a translation for your convenience. If it differs from the Korean original, the Korean original applies.
Free distribution and official sources
IeumOffice is free. It is officially distributed in only two places: this site and GitHub Releases. If someone is selling it, that is not an official release.
License and the projects it builds on
IeumOffice is open source, released under the Apache
License 2.0. It is a modified version of the open-source office program
GenOffice (Apache-2.0), and its
Hangul (HWP/HWPX) editor is based on rhwp (MIT).
Notices for the programs and fonts it ships with are in
NOTICE and in
THIRD-PARTY-NOTICES.txt in the install folder. In the app, see Settings → About → Open-source licenses.
This product was developed with reference to Hancom's published specification of the Hangul document file format (.hwp).
If you redistribute it
The Apache License 2.0 lets anyone modify and redistribute the program. You must include LICENSE and NOTICE, and state in any file you changed that you changed it. The license does not grant trademark rights, so you cannot use the names and logos "이음오피스", "IeumOffice" or "GenOffice" as if they were your own product's name.
Trademarks
IeumOffice is not affiliated with, sponsored by, or endorsed by Genspark (Mainfunc), Microsoft, Hancom, Adobe, XMind, the company that makes draw.io, Google, Anthropic or OpenAI.
- Word, Excel, PowerPoint, Visio, Windows: trademarks of Microsoft
- Hangul (한글), Hancom, HWP, HWPX: registered trademarks of Hancom Inc.
- Acrobat: a trademark of Adobe
- XMind: a trademark of XMind Ltd.
- draw.io: a trademark registered in the European Union (EU)
- Google Drive: a trademark of Google LLC
- Claude: a trademark of Anthropic
- ChatGPT, Codex: trademarks of OpenAI
- GenOffice, Genspark: trademarks of their respective owners
These names appear here only to say which files IeumOffice opens and what it works with.
No warranty
IeumOffice is provided as is under the Apache License 2.0, with no other warranty. Content made by AI can be wrong, so always check it before you use it. Making sure you have the right to use that content is up to you.
Contact
Trademark or copyright infringement reports and license questions: pblsketch@gmail.com